Here are some VTuber name suggestions based on your provided keywords:

Combining Keywords Directly:

• HolyBatGirl
• ChurchBatGirl
• GothicBatYandere
• NeetHolyBat
• YandereBatChurch

More Evocative & Creative Names:

• Bathedral: Combining "bat" and "cathedral" for a gothic, church-related feel.
• Nightshade Lilith: Evokes a dark, gothic, and slightly yandere vibe. Lilith is a figure often associated with darkness and rebellion.
• Seraphina the Shadow Bat: Combines a holy-sounding name (Seraphina) with a darker, bat-related element.
• Kuroi Tenshi (Black Angel): Japanese for "Black Angel," blending the holy and gothic themes.
• Chapel Nocturne: Suggests a nighttime church setting, hinting at a mysterious or gothic personality.
• Reverend Raven: A more playful take, combining a holy title with a bat-like creature.
• Gothic Lolita Bat: Directly combines several of your keywords for a specific aesthetic.
• Crimson Sanctuary: Evokes a dark, gothic church setting.
• Midnight Mass: A name that suggests a mysterious and potentially yandere personality.
• Bellatrix the Reclusive: Combines a celestial name with a hint at a neet lifestyle.

Names with Variations:

Many of these names can be further customized by adding numbers, Roman numerals, or other stylistic elements. For example, "Nightshade Lilith" could become "Nightshade Lilith XIII" or "Lilith Nightshade." Experiment with different spellings and additions to find the perfect fit.

Remember to check if the name is already in use before settling on one.